The FDA warns consumers about clinics offering oxygen chamber treatments for a wide range of non-approved ailments, from Alzheimer’s disease to sports injuries. The FDA warned consumers of a classic snake oil scam after hearing dozens of complaints about false advertising of oxygen chambers as a cure for cancer, autism, diabetes and other serious diseases. Hyperbaric oxygen therapy devices, commonly known as oxygen chambers, are being offered as a cure-all by many treatment centers and websites, the FDA said in a warning to consumers.